Home / 18,112.45-27,146.80-13,169.83

Finding the Fourth Proportional to 18,112.45, 27,146.80 and 13,169.83

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Solution

The fourth proportional to 18,112.45, 27,146.80 and 13,169.83 is: 19,738.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.45 : 27,146.80 = 13,169.83 : x
  2. Step 2: Convert to fraction form
    18,112.45/27,146.80 = 13,169.83/x
  3. Step 3: Cross multiply
    18,112.45x = 27,146.80 × 13,169.83
  4. Step 4: Simplify right side
    18,112.45x = 357,518,741.04
  5. Step 5: Solve for x
    x = 357,518,741.04/18,112.45
  6. Step 6: Final answer
    x = 19,738.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.